Antifreeze radiator for automobiles



June 14, 1932. w. H. COLLIER ANTIFREEZE RADIATOR FOR AUTOMOBILES Filed Dec. 15, 1930 i5 inventor 74 7 m CoZZz'er 7 g (Ittorneg Patented June 14, 1932 i g V "UNITED STATES PATENT OFFICE,

Application filed December 15, 1930. Serial No. 502,544.

This invention relatesto radiators such as tions existing when the temperature is norare used in connection with internal commal. bustion engines of the water jacketed type. Figure 3 is aview ofthe radiator in sec- Engines of this kind are in general use tion on the same plane asFigure 2 but showa for operatingautomobiles and in the colder 111g the. conditions existing when the water climates the radiators of such engines he has cooled to near the freezing point. quently freeze in cold weather unleis special Ashherle Sh(1)5Vl11 the radiagfi' includes an up:

recautions. are taken. Radiators or autoper ea er iaving a ing cap 11. ihobiles are usually kept filled with water lower header 12 having a double wall 13 and the freezing of the water commonly reforms the lower end of the radiator,"the sults in rupture of one or more of the thin double wall providing an air space around radiator tubes or cells which provide the the contents 0]": the header and thus acting greater part of the radiating cslurfaples. as at heat Cjnsulator 130%6'6316. heat josses by tllle These radiators are rovide wit an upcon aine water. a iator e ements per chamber or header and a lower chamber which may be the usual cellular type, conor header, these two being connected by the nectthe headers to permit flow of water from thin walled circulating pipes or cells. Unthe upper headerto the lower header and der running conditions the lower header, the are arranged to provide for cooling the waconnecting structure and a portion of the up- 'ter in its downward passage. One or more per header are kept filled with water much thermally controlled longitudinally expanof gvhich lifilelfilbln jzhe lfojsvl er headert. sllilehchaillilers of thce lgype .sIOEetIrnDf-caflIed 1 mon e 0 cc s 0 1e resen invensy p on e ows or u es. ave ere ore tion are to provi de a radiatoi' of improved referred to these expansible chambers as construction wherein the water will be autosylphon elements. Each sylphon. element YT matically drained from the tubes or cefflls lei canstitptes a tengperature controlled conitracthe radiator when the tem erature o t e ti e an eXpansi emeans varying in v0 u'me water approaches the freezing, point; to prodirectly as the variation intemperature of vide for varying the efiective volume of the the Water in the radiator. The size of the lower header inversely with the temperature lower header is, for, all practical purposes,

1srlo tlhatthe water s jeiaceG withint the lptyler the sameat ail temperaguresbpet ltspkillectye eac er increases as e em era ure 0 1e v0 ume, 1. e. 1e space or wa r W1 in 1e contained water decreases aiid decreases as header, varies inversely as, the temperature, the temperature increases; to provide with- $11106 I rea e. of temperature increases the in the lower header, a contractile and ex- Space occupled bythe y p eme t pansible element for thus varying the efl l and f g t I P? Q %1 fective volume of the header; and to so conl space: I F 0 513318 91110311" struct the lower header as to delay the loss and m n -t y ph m of heat from the water contained therein. 1t preflambly t Small quantlty. ,Of

With the above and other objects in View some t a l hquld h as fi one embodiment of the invention will now A i 16 has theuu3d Water Jacket b 1 rib d d t f b had which is connected'by a pipeconnectlon 17 e (6S0 m t T6 trance with the upper header 10; A second pipe to h mm- Wherem. connection 18, having a pump 19 interposed Figure 1 1S a perspecttve Vlew h g a in its length, connects the lower header with f f 1 constructed 111 @CcOTdanc/e 71th the water jacket. This connection 18 is so 95 this invention and also showing one form of f d to extend u to the top f the Wm connection between the radiator and the wat j k t d th d t th i l t f th ter jacket of an internal combustion engine. water jacket thus forming a goose-neck cons b Figure 2 is an enlarged vertical section V nection 18. In or-derto prevent the action through the radiator and showing the condiof the sylphon element from afiecting the water in the water jacket by siphoning it off through the connection 19, a small by-pass tube 20 connects the upper point of connection 18 with the pipe connection 17, this destroying any sylphonic action by the pipe connection 18. A check valve may be included in the connection 18 to prevent back flow instead of employing the goose-neck connection for this purpose.

The operation of the invention is clearly illustrated in Figures 2 and 3; In Figure 2 it will be seen that, at normal temperature, the sylphon element 15 is-so expanded that much of the volume within the lower header is occupied by the sylphon element or ele ments and the water is maintained at the normal or proper level. Upon the temperature dropping, as for instance when the engine is stopped, in cold weather, the water in the radiator cools until the freezing point is approached. This causes the sylphon element to contract until it occupies but a small space in the lower header which then has space enough around the sylphon element to allow all the water in the tubes 14 and upper header to flow down intothe lower header as shown in Figure 3 where its remaining heat is conserved by the double Walled or other insulating construction. Obviously, as soon as the temperature around the sylphon increases when the engine is started, the sylphon element expands and the water will e forced up into the tubes 14 and upper V header.

water in the radiator, the maximum volume of said lower header having a capacity sufficient to hold substantially all of the water in the radiator.

4'. A radiator including an upper header, a lower header, tubes connecting the headers, and a thermally controlled longitudinally expansible and contractile element of the sylphon bellows type in the lower header, said lower header having a capacity sulficient to hold substantially all of the water in the radiator uponcontraction of said element to near its minimum volume.

A radiator including an upper header, a heat insulated lower header, tubes connecting said headers, and a sylphon element in the lower header, said lower header having a capacity suflicient to hold all the water in the radiator upon contraction of the sylphon element to near its minimum volume. r

In testimony whereof I afiix my signature.

WILLIAM H. COLLIER.

tion to cool the water until the water in the I jacket has become heated and that which flows down from the upper header has caused the sylphon element to expand and force the water up to the normal level,

It will be evident to engineers that various other arrangements may be made embodying this invention. 7 For example the sylphon element may be placed in an auxiliary insulated chamber connected to the radiator.

I claim:

1. 7A radiator of the class described provided with heat radiating elements, and a water storage chamber communicating withthe heat radiating elements of the radiator and being provided with means for varying the effective volume inversely with the temperature, the maximum volume of said cham-v her having a capacity suflicient to hold substantially all of the water in the radiator.

I 2. A radiator including an upper header, a lower header, and tubes connecting said headers, said lower header beingprovided with means for varying the efiective volume inversely as the temperature'of water in the 

